不知恩情,忘恩者不知恩的,忘恩的
Ingrate \In"grate`\ (?; 277), a. [L. ingratus. See {Ingrateful}.] Ingrateful. [Obs. or Poetic] --Bacon. Ingrate \In"grate`\, n. An ungrateful person. --Milton.
ingrate n : a person who shows no gratitude [syn: {thankless wretch}, {ungrateful person}]